DE2059421A1 - Button and button unit for actuating contact spring sets - Google Patents

Description

Patent Attorneys Dlpl.-lng. FJ. Π ". Γ. T Z sen.

Dr.-lnc. Γ2. J-- - "- '· -" i "- Jr ·
Munich 22, Steinsdorfstr. 10

1S516369P (1637QH) December 2nd, 1970

KRONE OmbH, Berlin Jf, Ooeraallee 311

Taate and Ta "t" lnh * it for messages from Contact pen »Etching

The invention relates to a key for actuating Kontnktfederafttaen, especially for telephone set · nit selection of a button, whereby a button ffe ^ en the power of a Return spring »wiecher» «vei determined by AnechlMpe "Tellun £« n is roughly parallel to the contact springs in the direction of the run and about at leasteatene The contact springs are adjacent to the contact springs actuated, and a number of such keys formed a keystroke »

In the case of such a known fact (cf. I) T-GM 1 971 5 ^ i>) is a fixed, massive tactile button clock core, on the face of which you can see the open wheel hollow-cylindrical pushbuttons slidable to

-Hd-r (7)

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tf and below by the de-π lower section de »TaatknopffUhrungskkern arranged · the return spring is supported · The push button has a breakthrough about halfway through which a single" switching cam extends "Pie Schaltkugei is also on a switching curve Je" TaetknopffUhrungskerne on, so vird DAT when you press the Taatknopf "the switching ball outward £ s moved to press through stronger exiting dam breakthrough in Taetknopf the DAAU auQen lying contact springs for contacts Rabe au.

The well-known key requires a relatively large amount Plats, especially when the pushbutton crown has to occupy a certain space to make it easier to use. This also prohibits the construction of a pushbutton unit several such buttons.

Ii * is therefore the object of the invention, the twist of Improve the type mentioned at the beginning in such a way that Oer Platabedarf despite the attachment of several independent contacts spring support is significantly reduced, but at the same time the button is functional «

This problem is solved wildly in that the push button sits on a key pin which is longitudinally displaceable in a hollow key body that has perforations, through which see each one of the Sehaltkugeln extends, the Each lie on a switching curve of the feeler pin, through which the Sohaltbugeln by pressing the button in the through « broke to be moved outwards

There is an advantageous further development of the invention

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in it, <Yes, a touch of the touch probe les hohlayHnlirlacliofl! MttolstUck of the touch button f "n" hftt an inner tfwfang a pasta stop, then pushing the button on the upper Εη <ίο Λββ the touchpad of these buttons pressed against each other · then au * "chnappen and verifiable to the upper edge · de · £ a" tasi8chl & grinp each other; create s TTnterkenta de · _t defending himself with "telstUcks on dor top of in comparison rum upper Fnde de * Ta ^ trupfene thicker Ptufe of tWitisap ^ ana eich supports.

Dne covered a foiled Monte, · «the key without · ntlfenltt * l! »κν. Selling. The buttons can be used after the electrical test / 5 of the button be mounted ".

It is similarly advantageous that the tactile body protrudes at the bottom, so that when the tip of the body is inserted from above into the tactile body, it is similarly advantageous that the tactile body does "T ^ * t" ap ^r <»Na vorffes · - hene springy t) a ^% backen presses one another, dl« ans cn 11 · - 0 · ηΊ ftucelnandersehnapp ^ n and look through the force of the »Hcketisllfeder on the door gateKent · of the RinffvoMPmnf!

f «m« r «veckwiSiJlif, 4aO der Tastxapf ·« an «a thicker step with a 3ftn?« rr «rlaufeatf« n fHhrunr ·· rib into a corresponding cha? i4 * n FtJhrun / »« »chlit * <Λ · Η tactile «engages.

Filhrun / j · rippe represents aronVchst a T of the Tu » t zapfen β iw Ta« tki * rper nmr. *! · Can be "nn 1", by the way, that you can use the 4ick «r« Ji

209830/0073 BAD OHiQiNAL

Step of the key pin acts as a stop for the key button when it is placed on the key pin. In addition, the guide prevents twisting of the key button and therefore also a side lock at Jor Ilontuii important "woim clio switching curves" Ic a Taat zapf us for the Betüti ^ auit: dor Schaltkugoln einan untorechiodlichoa Vorlauf haboa, in order to different ^ chiedva "switching foils for the olnzolnon Schultku ^ oIn b" ttf "ti (; <ion KontaktfodoraUtso to orzielen ·

It is also advantageous to use JaO dl «Untorkante d ·· outside of the Jlantoi »de» button button at unbetHtictor button below the HÖho the contact rivet the contact spring and where switching balls are located.

This Norknal ceetattet "inen £ utes Stabschuts door the Xontolitfodern and Kugoln, while in the aforementioned bekannton key balls and contact springs practically froilio ^ s" In addition, the verliUl tnisaä · üiß Crosso Lttn ^ e de · SLußeren coat dee Taotknopfe promotes ^ e4ieaseitii ; it AbetUtseu of the tactile knots, vmtxn mohrerston su a tactile unit susaiaaen £ ofa0t are

de grip dee Taetknopf · Iur the Ta "tfinger operator vird characterized erhüht" that ύτ fiuAere jacket of Tastknopfs upwards over au "inen Absate a push button · crown is tapered, and that the push button Deckfltfcbe ΰ · τ · crown has a recess ·

Another advantageous embodiment of the

is reflected in the fact that in the recess the probe head « crown a transparent blend «and underneath a darehfesfe Characters are arranged "

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BATH ORIGINAL

for the corresponding number of characters can be changed

; © Characters vie digits or letters have been placed in the most varied of tarbon jars.

? .vk ßinor better ^ c ^ enseiti ^ eii TUhrtms of the buttons in oirior Taateinheit and a "better dust protection tr3 £ t also that the jlußcro Mnntol doe button has a single rectangular cross-section.

It is recommended that the probe body be the probe pin, the button and the key balls made of plastic fcostehon »

Polyacetal is preferably used as the Kungtetoff. This plastic is characterized by high strength, good © iOrcsboetiindickcit and high abrasion ¹ »id erstand ·

For a firm holding of the contact springs and thus for maintaining an exact contact spring spacing with a view to gonauo, re-producible switching foils by means of a key, it is necessary that the contact springs lift a bead on their lower abutment each, which is held in place by a retaining groove, which is either from the almost "kUrpor and from it proceeding LUneaetegon on'cr from the LKngs & togon and a quoreteß connecting them.

Hatred attaching the beads in ilen contact springs he "Xeubt r.uch, the Haltenutcn certain Mindeetabmeeeuniien üeben su, so that the retaining limiting component · vorteilhattcrwcieo hereeet by injection *> can be · falls

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DIo manufacturing «,? is further simplified by the fact that rlio ITaI tones are the same for all Ttontaktfodern.

To the pie run ”? of the contact spring η in the assembled state © ino LSnrsverschaltung if it is expedient that the dio

e each have a horizontal protrusion whose Distance vonainruHer {* r <"ifior baw, smaller than the width of the bsw. tmtoron Abeunitte the contact feather

For defining to Äbstilnrte <Jer einsolnon Kontnktfodarn voneinanclor and dnmit f? Enatto Schaltfolpen also ensures that the contact springs are calibrated with your upper section ata tactile body bxv. Ouor & ter * before ^ eepnnnt abstütasen.

can provide for the cactus nibs on their upper edge © oin in the wosentlichtm reohtvitjklig © 3 ϊ inkelstilek hnbon, by the egg © eich in rest position on before <»e» pn «nt

the L? fnpt? st © fo di © bt? roits ^ onnnnten horizontal

n «f>; iron, igt os without further ado mN'-lioh, cure nuch dio with a right-angled Vln! col »tUek vor · »Flat contact springs from ttnton into the elnztt key ·· push.

hurry βΓΐΗη <- ^Λ «η ^ β ^ ο! η9Πβ Taeto au a ρ chi laudable ItIr Fernsprochapparato with Taetwaht vorrroaohen is ββ

that the switching curves of the Taatzapfsns have each echrSrren section, which brings about a fius £ eprf * ste3 maxi ·· of the key bedttipunrsdTttckkraft , nvi a min? tt ?? tenbetftifrunrrüzoit ru

BATH ORIGINAL

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Such a minimum key actuation time is required, i.e. that of the participant by pressing a key sent out Valxlinforaiafcion in the Yerutlttlungseiarich · tung iichor can be recognized

Effecting the pressure points essentially through the sloping sections of the switching curves has the further The advantage of resetting the button with the! Uetstell spring koine additional forces are required.

Several of the keys according to the invention can be combined with a tactile unit in such a way that the key "embodies the crossbar" and the longitudinal webs are connected in one piece to a "key block", and also holds all the contact springs.

By using the keypad an exact alignment is made individual keys to each other guaranteed, eo that dia individual. TastzapTozx only in the individual Taatkürpar de »keypads need to be inserted (without additional * adjustment work to ensure compliance with beetirocater Ab » etän.io occur between the keys) · This can also Relatively low tolerances IUr di · Mittenabatänd · the keys ia comparison aur honing a variety of completely separate keys are provided on the * se Veisa can with a large Taatenanxahl the platebe · may the unit of deeds was kept relatively small » the.

The invention is based is drawing closer, tert, ± tx of a AuefUhrungsbeiapiel an au "he nahreren · findun ^ agemäCen keys existing arfladungsgemäOon Ta * t * unit displayed i" t · Ea "eigenι

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- * - 2053421

fts. · 1 üiau Teilaaaicht dor Tasfceinhoit la LUngsadmit t along Ϊ-Ι in Fig. 3>

Fiß. 2 eiua Tuilansicht, partly in quartz cut uss H-II from Fij. 1 y

Fi {> 5 a top view of the Ta3teinhoit, part

in the quorachüitt along III-III of . 1 »and

TIg, 4 the Zusarftiaörxhang aswiachca

druclckraft and Tasienhtib oiner oinzolnen Ta »ta dor TasteJUiheit»

FIg, t shows a total of three buttons, of which the right button is only incomplete; is shown, while the middle button is in the rest position and the left button in the Eetati & un & ststellung «similarly in Fig, S the right button is in the rest position , while Uiο left test, of which only the pushbutton can be seen, is pressed, ls should runlichbt described the development of a one a Test werdenJ

Base plate 1 made of insulating material, the right . B "printed circuit board of a printed circuit serves deceptive mchrero for each button, substantially atreifenföra; ijje Kon ·" clock springs 2 _t in in FIG · 2 ^ e "elgter Voiee About j · a is kende by a respective Grundpiatteudiirchbruch 1a Qretr flag 2d to an electrical Fehaitune * st, D · U9T circuit board bsiw, base plate 1 _f anKOpchloseen are · Di · flags £ düex * individual contact springs 2 »iml

• ^-:: 09830/0073 ORIGINAL BATHROOM

gogeneiuandervorögtat (vtfl · i'ig · 2) · I) Io contact ·· Xedoru 2 are arranged to boiden oinea obonfall "from the base plate 1 tragagoaeii Taatkl-rpar" 3, and * v & r for the middle tacto of Fig. 1 three contact wheel «« * left ua; l zvoi Kantiiktfotiem rochU voa Taatkörper 3 · 01 «here tg £ 2ei £ ta KoacAittreJorbcstUcU-un ^ is only exemplary _t can vary in AbhUogi ^ cold voa Verwoniiuxitszwack

Parallel to TaatK0rp «r 3 go from the, Grmviplatt · 1 lui * t »nfUnni £ · Quereteßo 3 * from, the Jurca Li ^ n ^ esto ^« 3 * la «b ** onJ * r« FIf · 3) alt dem TaatkÖrpor 3 vörbuudea Si · Lln ^ eeteg «3 * babta zueiaatulor £« vandt «Vorw

3 "a (v £ l · Fig. 3), to that through the LILnjsetegi" 3 "• ln« ra «ita and dta T & atkUrp * r 3 oxw« the Qu «ret« g # * an * cUreratitft n & ltonut «n 3 'Would be "welcomed". Lie ttaltaauta * 3 * a hold insbeaoikiero the »it ia« «« «atlicnon äalbkutfal · furuigan sick« a 2a vereehenea contact cedars 2 on their uo · tmrma Abaohnltt / eat ₉ above all the observance of defined ab · «iände avtieeheo promotes the individual JCoatakt ·

Fi £. 2, the contact domains Z are given by dl

3 "a der L & n ^ eetege 3 * also sucked a Veraohl ·» after ob <m

All Maltenuten 3'a have in the Verliugcodea Awe guiding "boiepiel <3io * same abuses" therefore - is achieved by, ^ eoigaet · Co; rcu »uxi £ d» r Slckon 2a for different block thicknesses of the Xontaktfedern 2 ·

Oae Atkbriutfen Uer beading 2a to the contact * bl · » This also includes non-fertile crllnion, since b # i

During the manufacturing process, the grooves cannot fall below certain minimum atoms due to pressure.

For defined distances between the individual contact springs «2 from each other and thus precisely · Retaining foils also ensures »that the contact springs 2 on the upper section either against the Ta »tk? 5rper 3 baw. the '«first V are biased, so r? aß they in the rest position ani probe body 3 bxw. Make contact with the crossbar V, or via a right-angled * upper angle piece 2c at the TastkJJrpor *? Support pre-tensioned (cf. in "the contact springs 2 of the middle button) ·

How special yut the right button from Fi ??. 1 also shows that the tactile element 1 is a hollow-cylindrical cuboid with a hollow cylinder inside, the diametrically opposite through-hole in each case for receiving a switching tower h has a tactile map 5 that is longitudinally slidable by the tactile element 1 printed on the outside, as will be explained in more detail, so that the contact springs 2 adjacent to the switching balls h press with their two contact rivets 2b against each contact rivet 2b of the next contact spring 2 and thus establish the desired electrical connection. The BetMtl ^ un, ^ of the Tastsapfen * 3 is carried out by a test button 6 connected to it, as will be explained below in one place «

The diameter of the openings 3 "corresponds to the diameter of the switching balls k, so that these can be freely moved" outwards "in the openings 3 when the ball is soled.

The feeler pin 3 has one on the scarf Pages Sehaltktirven 5a, ctairek dl · dl ·

BAD ORfGfNAL 209830/0073

- 1Λ -

the switching ball is controlled "when the dew button 6 is pressed and released and the sensing pin" 5 is activated * It can be seen without further ado that, by suitably shaping the switching curves 5a, the lateral movement * the switching "of the contact springs 2 according to Yunitch" is also possible for the two contact spring steps different, it can be determined what more will be explained: The section of the Taetsapiens 5 lying below the switching curves 5a is (cf. Fif>, O stepped), with the diameter of the individual steps decreasing downwards, and with «a« lower end through an axial opening; 5b of the feeler body 3, which is surrounded by ilingvoraprung 3e ? arranged in the form of a helical spring, which is pressed when pressing the button 5 (cf. the left test in Fig. 1) and in Loelasaen the button 6 the button 5 in " a rest position (vel. Middle Ta * »to in Fifty, 1) partially divided. The securing of the "keyboard 5 on! Ungvoreprung 3" and thus on the body 3 will be discussed in more detail.

If the telephone is intended for “a telephone set with almost” choice ”, in general, with regard to the switching operation of the existing telephone exchange, care must be taken that“ a certain minimum since ”s · B * kO msec (for the pressing of the key is not undershot »otherwise when the keys are pressed one after the other, the switching identifiers created by them get into the exchanges in quick succession so trained ropes »daü

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dl · · Minriestbetätigungszeit the key is kept · ewpfiehlt To this end, "I dl · in Fig. k" depending on the TawtenbetHtiRunKSdruekkraft the keys · hub that with dam of Figure "1 apparent course of Sohtltkurven 5 'linked as follows is ι

If the in Fig. 1 is pressed, the holding balls h first roll in the vertical, straight section of the holding curves 5a, θ ο because the mechanical resistance that is overcome by the pressing force of the pushbutton is essentially due to the compression of the Wücketell «spring? is determined. Noeh not give b ά & τ minmn Kontektfoder 2 contact with the contact rivets 2b another contact spring 2 This phase of TastenbetMtißun # t during which no electrical Schaltvorgünge instead · For * nlso the Kontektniete?, K beeeiehnet in Fig. With "Torhub".

Once However, in "other" pressing the button Sehaltkttgeln k to a fallen Absehnitt 5a * frelan ^ s, which TastenbetMtigunicsdruokkraft verstMndlieherweise au, nisMt "waal aueh provided on each Schaltk" §rei k fitting con · tact spring 2, "" only "T * tren your own preload «· and then also yours that of the remaining contact springs 2 must be pushed away« which reads the electrical switching processes through the true contact of the contact springs Z phase of the TaaftenbetJItigaag is the "working stroke" ¹ (cf. rig * k) «it« in · «Bruckpunkt ·

The pressure point of the arm stroke causes the keys * operator swung to exert such a great pressure *

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that after overcoming the pressure point dl treadmill cannot be aborted at will, but the inertia of the hand presses the key waiter so that the switching balls 4 on the upper vertical straight section of the switching curve 5a as with the left key in fl. 1 Unroll until the lower edge 6c of the hollow cylindrical middle piece 6a of the button 6 strikes the upper edge 3d of the feeler 3 This phase of the button activation, which the contact made during the work stroke, remains unchanged, forms the "Kaehhub "(see Fig. k). The post stroke ensures that the required minimum

the button.

The effect of the pressure points essentially through the inclined sections 5a ^{1 of} the switching curves has the further advantage that mrnrn. Reset of the key by the "Ueketellfeder η no sue" t "borrowed XrHfte are required ·

Who TaetiÄpfen 5 has above the switching curve 5 *. a relatively thick step 5e two diametrically opposite * t1b © rlletende guide ribs 5c, each in a guide ·· sehlitas? e de · TamtkUrpers 3 led «Ind. In FIg. 1 i «t for the left and middle button only the front guide rib 5c and for the right button only the Ptlhrun & saehilt * 3c for the (not shown) rear Ftthrun & srlppe am see · In this way, a threat safety device for the probe 5 achieved · case · for each key instead of two only one fun · "rlpp · rait a single guide" "chlit" provided is, there is also a page reversal of the · Tastsapfen · 5 when it is inserted into the probe body 3, vaa is desirable if - as already mentioned

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curves 5a for the individual switching balls * ♦ different Shape to have a different laterally · «drain switching * the left and right contact springs su er * are sufficient·

The connection of the upper end of the feeler pin 5 with the probe pot 6 is shown most clearly in FIG. The upper T-nüe dee Tastsapfena 5 is its usual a fork 3d with a Kaotbacken 5e on each fork half. Each Rastbaeken 3e has an outer introduction * schrage 5f · The fuse de "push button · 6 of tactile lugs 5 vlrd before · Taken _t by the Taatknopf 6 is old Eisten hohlaylindriechen Mitteletück pushed 6a from above of the locking jaws 5 ·" eo that these pressed to each other and finally disassembled again, with the adjacent section of the associated half of the fork 5tt on a R as tan a chi a ^ rr ing 6b on the inside of the hollow cylindrical center piece 6a of the push button 6 . On the same side, the lower edge of the middle section 6 &, on the upper edge of the step 5g, which is thicker in comparison also at the upper end of the taphone 3, is supported by the guide rib 5e, so that the button 6 against LMn £ misalignment "on the Button app 5 ffeeiohert iet «

9! Weokmä0ieerveise is the lower change of the tactile cup ¹ S Mhnlioh ffabel forHrmiß · like the above be "Ehr 1 level upper find""refornt and alno also with two Raetbaoken 5e * (v ^ l. Fig. 1), which at Installation of the probe socket 5 in the probe body 3 by RinRVoreprunj? When pressed one after the other, one after the other chopping up, so that the tactile cap 5 g * e * n leaned out of the tactile body 3 is secured.

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, _π . ",, J

The yell of the lower edge · 6e of the bohl · syllndrishen ffittelstilcks 6m <3e * T * etknopf · 6 that remains free meets a corresponding display area 3d when the button is pressed of the Tft "tbody" 3 (see left button in Fig. i), u "the stroke de * push button · 6 «wheel so de * push button» 5 ms

The Tftvtknopf 6 has oisum ir »rbl (ltni» oUtUix deep hot · »Kant ·! 6d _t d ····« ttatvrkant · 6 · la

d · * Taatknopf · 6 with * rbalb d »r Roh · ll« gt, In d «r sielt dl · Schaltktis« ln h tmd dl · K «ntaktnl« t · Hh the Xontaktfe «the 2 are · Durea the ·· Arrangement is a wlrkeamr Staiteeebtttii the e% en named 3awel "9" ent · errelctnt * wm "the invention" a ** <ftie · Taete "ear functionally lighter""hurries · The stowage chut" can be improved even more Touch button cover »6d,« rem «several keys are disordered next to each other« because the individual touch button cover is already rerined over a created cross section of the touch button cover «

Ser Taetknopffcantal 6d is verJUnct upwards over a Ab * sats 6t ma a TastknopfkrcNite 6g . as deittiieli from the Süelchxmne recognizable l * t * Oitreh the verjünete ias * · button crown 6g is the SetKtigen the tactile "n" rleiehtert "by the risk is reduced de una · & elchtliehen ftetäti" ens a Wachbartaste "

Pushbutton crown 6g has a kr + i mftirtalgm Ye * tie * which converts to umten and, thanks to the convergent progression a »beginning, largely avoids sliding the fingers of the operator at« keys. The lower part of the Vertlefune 6h has a circular shape on its base

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Character insert 8, *. B. "on paper" on which κ · B. a differ ο 'er a letter is shown and calibrated “in · transparent ·“ ι also circular aperture 9, as »B, made of plastic. The interchangeable label lap "^p" has the advantage that it can be printed according to the needs of the particular "11peη", while with characters embossed in the button crown 6g, special production labels are required

An advantageous further development of the invention consists in the fact that "several keys according to the invention on a test unit, in particular for a telephone old touch panel, are set up in such a way that the command panel 1 for" 11 · loads ceweinsesi is * md correspondingly all key elements 3 " «Tnerstec« V «UUMrss * e # e 3 * *» nd contactfe «· dem 2 for the one pocket ·» trXgt · Here, the tactile bodies 3, the ctuersteire 3 * «ad the LMngsstege 3" all fast one inhelt _t which can be manufactured as a one-story Tasi * bleek IO dereh Bprttmgmä

To assemble, the pushbuttons are tinted with the restoring spring 7 in the external solid body 3 by means of the box brackets 5e * eiA ^ then the switching balls 4aa the through holes 3 are locked in and the key clock springs 2 from down over the Haiten "th 3 **" * d the interspace "wipe the heel jumps J ^m * elneesehoben (the upper section of the Kentaktfedern 2 is a little more separate than this Xwisehenrawnt), until the upper section of the contact springs with its upper edge on the Preliminary statements 3 * a of the LKn ^ eβt «s as in Pif« 3. Then the keypad 10 with the mounted test pins 5 »SchaltkofeIn H and Xontaktfedern? fresetst on the main plate 1 »

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* Ja3 the flags? D by the gugeh ^ rlgon Grun <Ji> latt * iiJureh ·

After connecting the touch block IO to the base plate 1 by several screws 12 (see figs. 1 and 3), the touch pad 6 is opened onto the touch pad 5, on which one can Elnraeten in the manner already explained. After the «electrical connection» of the flags 2d _# ■ · B. by dipping the key, the button is ready for operation ·

The gaaantheit of the buttons 6 of the Taeteinheit extends eich through a Aueapamrag In a Oehüusewand (cf. Fig. «i) with possible whom! he distance from the latter« well prevent the penetration of dust "

Vilrde »an lot Ge ^ enaat» sturdy invention arar the creation of a key unit attach the keys to one another on the base plate, so they would have to be aligned with each other and in this connection there should be wider tolerances of the center distances of the keys * «ras ine * especially with a large number of keys the platx requirement of the Taeteinhelt would increase.

209830/00 7 3

Claims (1)

Claims ^Γ Βθί - ^"x - Dar) nht äJ Dar) not be changed 1 · Button for actuating the contact £ eders3.t2ön "Ins * foosojidoru for Forneprochapparato lait tactile dialing, whereby a Taatkiiopf 3050η the force of a footprint or between S5w © i by stops determined by stops in approximately parallel on the contact spring ^ running direction" · borrowed and Ubor least ei no actuates the Kontaktfedom to don contact spring "in" lying Schaltlcugel, characterized gokennzoichnet W, that the push button (6) sitting on einorn Taatzapfen (5) "led the svorschiebbar in a hollow Tastkör ·· by (3) liin ^ 1st, the breakthrough (3 ") has" through which each οAna of the switching balls {k) extends «dio jöwoilo an © itaer switching curve (5a) cJee Test · * pin (5) through which the switching balls (h) lie when pressed the button in the breakthrough (3a) moved to the outside 2+ button neon claim 1, characterized by two breakthroughs (3a) which are diametrically opposite. * 5 key according to claim 1 or 2, whereby g ρ - denotes that a isitzondos hohlssylindriechefl means a tüclt (^ a) dee Taat on the tactile lugs (5) "button (6) at its inner periphery a Raetnnsehlagring (6b) hrtt" dor in sliding dee Tnatknopfe (6) because · upper En «Β (5d) de» Taet ^ apfene (5) from this ewel presses resilient fastbnckon (5e) towards one another, dl * then flusQinanüechnftppen and »I to the Obork & nte des Ka» t «· (6h) « while the bottom edge (^ c) 209830/0073 Middle piece a (Ca) on the upper edge of an im. Compared to the upper »end of the probe pin (5) thicker step (j5g) of the probe & piens {5) is supported · * »* Key to claim" there _.v by gekennzeichne t since / 5 dor probe body (3) has at the bottom an inner King projection (3 ') which, when inserted from above de "Tastzapfens (5) iti the Tttstfcör · per (3) Awoi at the lower edge of the feeler pin (5) there are no resilient locking jaws (5 *) presses together the "chiießond" snap apart and calibrated by the force of the backlash "* of the (?) On the sub-account de »Ringvöreprunc * (3e) 3 · button according to claim 3 or 4, characterized g "· Ic d η η β 0 i seframe that d" r Tast * "pf s (5) to be ner thicker stage (5 #) wit einor Lan ^ eve rl ocular iüli- »rtjn ^ srippe (5d) intervenes in an« ntenrsehentien PUhrung'aechlitit (? c) dee TaetklJrpere (^) » 6 »Taeto according to one of the preceding claims, because the lower edge · ^ öc) of the ätifleraii jacket (6d) dös button (6) b © i tin · · touched button below the height of the contact rivet (2b ) the contact spring »(2) and the switching ball {h) lies« 7, button according to any one of the preceding claims "da * through in the outer Hon · * toi (6d) de"Tastknopi'4 {6) DNSS upward. A button crown (6g) is tapered via an Abs & ts (Cf) kit "and that the surface of the button crown (6g) made a recess (6li) !" 209 8 30/0073 tf "τα" to after Anspnoch 7 "da-iurefr g ο k β η η <· βσ rejects that In dor Vortioftmg (6h) dor test button Tirono (&r;) o a transparent Blenie (1A) tmd to it · tor a turning fee Zeieheneinlac © (ii) are afroorctnet " 9 Acts according to the previous claims, characterized by that äuiiero coat dee Taetknopfa (6) oinon rightocUiguu cross-section has 10 · Key according to one of the preceding claims «characterized» that the Taetkörper (3) · the pin plug (5) »the push button (6) and the switch · balls (4) made of plastic 11. Key according to claim 10, characterized in that » drift the plastic is polyacetal · 12 «Tasto according to one of the preceding claims«, characterized in that the contact shapes (2) uti their lower section each have a bead (2a) which is held in place by a retaining groove (3 * a) which is either attached to the shell (3 ) and extending longitudinal webs (3 *) or bounded by the lengths (3 *) and a cross web (3 *) connecting them. 13 · Tasto according to claim 12 »characterized« that the retaining grooves (3'a) are the same for all contact springs (2) are" 1 * r. Key according to claim 19 or 13 "characterized in that the longitudinal webs (3") each have a horizontal one 209830/0073 JM Projection (3 * ·), whose distance from each other is greater b »choose smaller the width of the upper baw. lower section • of the Kentaktfedern (2) is (Fig. 2). 15 key according to one of the preceding claims, darturoh knows that the coutact feathers (2) are calibrated alt their upper section ae Taetkörpor (3) b «w. Cross * etog (3) pre-tensioned abutsen 16 · Key according to one of «the preceding claims, characterized» that the cen- tact springs on their upper code a lsi substantially · »right-angled elbow (2c) through which you can see in rest position Test » body (3) prestressed absttttsea 17 · Taete according to one of the preceding claims, for telephone sets with touch number »thereby ge · keans« lehaet _v dJiO dl · switching curves (5 ·) of the keypad each have a very Kgea section (5 **), the el * pronounced Mam law 4 key presses pressure force (pressure point in Fig. h) causes a rear key position to guarantee IB. Push button unit »consisting of several buttons according to one of the preceding claims «thereby g · k e η η - ■ • rejects that the Taetkorper (3). Uucrstege (? *) and Utnesstege (3 ") xu a Tastbloek (12) elnstUokig connected are «the state contact springs (2) hai · tort. 209830/0073 Lee r 's ei t